A water filtration assembly (10) includes a first end cap (34) covering the first end of a housing (12) and a second end cap (36) covering the second end of the housing (12). The end surface (40) of each end cap (34 and 36) has a L-shaped cap recess therein with an axial leg (42) and a transverse leg...http://www.google.de/patents/US6270670?utm_source=gb-gplus-sharePatent US6270670 - Water filtration assembly
